Fix re-prompting on invalid answer
Fix re-prompting on invalid answer

Previously if the answer to a question was invalid, the conversion would
be applied to the re-prompt result (which had already been converted).
Fix this by removing a lot of unnecessary promise chaining.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/travis-status,kevinoid/travis-status,kevinoid/travis-status